81644692_Case_Study_Report_2.docx

81644692_Case_Study_Report_2.docx - Contamination in the...

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Contamination in the Oil Sample 1 LAB REPORT ON CONTAMINATION IN THE OIL SAMPLE Name Course Professor University City/State Date
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Contamination in the Oil Sample 2
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Contamination in the Oil Sample 3 Table of Content Table of Content ............................................................................................................................... 2 1. Introduction .............................................................................................................................. 3 1.1 Aim of the Analysis ............................................................................................................ 3 1.2 Information of the sample ................................................................................................. 3 1.3 Spectrum Library Search .................................................................................................. 4 2. Methods of analysis .................................................................................................................. 4 2.1 Background idea of the method FT-IR and GC-MS ........................................................... 4 2.2 Gas Chromatography ........................................................................................................ 6 2.3 Mass Spectrometry ............................................................................................................ 6 2.4 Validations of using GC-MS and FT-IR ............................................................................ 7 2.5 Storing of the sample after receiving in the Laboratory ................................................... 7 2.6 Choice of solvent to be used ............................................................................................. 7 3. Result Analysis and Discussions .............................................................................................. 8 3.1 Oil contamination with Acetone ....................................................................................... 9 3.2 Oil contamination with methanol .................................................................................... 11 3.3 Oil sample (upper layer) ................................................................................................. 12 3.4 Oil contamination sample (lower layer) .......................................................................... 14 3.5 Analysis of reference sample (pure form of Glycerine) ................................................. 15 4 Conclusion .............................................................................................................................. 16 List of References .......................................................................................................................... 17
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Contamination in the Oil Sample 4 1. Introduction 1.1 Aim of the Analysis The objective of the analysis is to determine the contaminants in the contaminated oil sample. The contaminant and the oil sample were brought to the laboratory to help in confirming that the contaminated oil sample was due to the contaminant (Higson, 2003). 1.2 Information of the sample Table -1 Lab Reference No. of Identifi cation Labelled and Item Description Locati on Foun d by Date Time 1 WG16 - K Oil sample Humbe r oil Jackson, P 13.04.1 5 09.30 2 WG16 -00 K Contaminant sample Humbe r oil Jackson, P 15.04.1 5 09.40 Date the sample received: 15.05.15 Date the left the laboratory : 10.06.15
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Contamination in the Oil Sample 5 The above analysis of the oil sample and the contaminant, two analytical methods were used; the Gas Chromatography-Mass Spectrometry (GC-MS) and Fourier Transform Infrared (FT-IR) (Higson, 2003). 1.3 Spectrum Library Search The spectrum library contains peaks database for all possible compounds and elements that exist. Comparison between the analysis obtained and the peak database gives the correct compound that is most likely to be in the oil sample. The library also contains M/Z ratio that further helps in confirming the contaminant compound. In this experiment, three graphs were analyzed. They include; chromatograph, infra-red spectrum, and M/Z (Christy, Ozaki & Gregoriou, 2001). 2. Methods of analysis 2.1 Background idea of the method FT-IR and GC-MS FT-IR is an analytical technique that uses infra-red radiations to analyze a sample. When infra-red radiation is passed over a sample, the sample absorbs some radiation while other radiations are transmitted. This transmission and absorption creates a spectrum that is unique to each compound in the sample known as a fingerprint. Because of its formation of spectrum with peaks that corresponds to the bond in the compound, FT-IR can be used to positively identify any type of material. The technique is also used to give the exact quantity of a compound in a sample by analyzing the peaks. The analysis procedure involves emitting infra-red radiation which is passed a small opening that controls the quantity of radiation reaching the oil sample. The emitted beam then enters
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